Intermediate Repeat Expansion in the ATXN2 Gene as a Risk Factor in the ALS and FTD Spanish Population Borrego-Hernández Daniel Vázquez-Costa Juan Francisco Domínguez-Rubio Raúl Expósito-Blázquez Laura Aller Elena Padró-Miquel Ariadna García-Casanova Pilar Colomina María J. Martín-Arriscado Cristina Osta Rosario Universidad de Zaragoza Cordero-Vázquez Pilar Esteban-Pérez Jesús Povedano-Panadés Mónica García-Redondo Alberto 2024 research-article